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Power Management Problems
The computer does not enter Sleep or Hibernation mode
automatically.

If you have a connection to another computer, the computer does not
enter Sleep or Hibernation mode if the connection is actively in use.

Make sure that the Sleep or Hibernation time-out is enabled.
The computer does not enter Sleep or Hibernation mode
immediately.

If the computer is performing an operation, it normally waits for the
operation to finish.
The computer does not resume from Sleep or Hibernation mode.

The computer automatically enters Sleep or Hibernation mode when the
battery pack is empty. Do any one of the following:
− Connect the AC adapter to the computer.
− Replace the empty battery pack with a fully charged one.
Software Problems
An application program does not work correctly.

Make sure that the software is correctly installed.

If an error message appears on the screen, consult the software
program’s documentation for further information.

If you are sure the operation has stop, reset the computer. (See
“Resetting the Computer” later in this chapter.)
Sound Problems
No sound is produced.

Make sure that the volume control is not set too low.

Make sure that the computer is not in Sleep mode.
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